Attachment for wire ropes



lBIGBLAIBJJ DUANE GREEN AND ASSIGNORS TO JOHN A. ROEBLINGS SONS COMPANY,OF TRENTON,

Patented May 16, 193,3

UNITED STATE-s PATENT OFFICE CORPORATION OF NEW JERSEY ATTACHMENT FORWIRE ROBES Application filed February 24,

This invention relates to means for anchoring to wire rope attachmentsof various kinds, such as eyes, hooks, yokes and other elements commonlyused therewith. 4

This has been done in various ways as by serving, clamping, andsocketing and somewhat by loosely tting a slgeve to the rope and closingthe sleeve in upon thevrope by swaging or drawing until the ,material ofthe sleeve flows into the rope grooves.

This latter method has proved ,satisfactory and secured a quiteeilicient anchoring of the attachment when applied to ropes comprising asingle layer of strands or wires laid about a core but is not efficientwhen applied to ropes comprising two or more layers of. strands orwires, especially when the layers are all the same lay, as it has beenfound that the inner layers slide longitudinally or helically resultingin material loss in the strength of the rope and attachment.

The object of overcome this objection and provide an anchorage for awire rope attachment and method of producing it which shall effectivelyprevent longitudinal 'or helical sliding of the inner layers of strandsor wires and develop the full strength of the rope by forcing theindividual strands or wires to work in unison.

In the accompanying drawing forming a part of this specication, thereare shown by way of illustration several embodiments of the invention,and these constructions will now be described in detail and the featuresforming the invention will then be pointed out in the claims.

Referring to the drawing:

Figure 1 is a View partly in longitudinalV section showing an attachmentas applied to a two layer wire rope.

Figure 2 is a similar` section of the same in a modified form,

Figure 3 is a view partly in section of a modiied form of the invention,

' ing,

the present invention is to` 1930. Serial No. 430,921.

Figure 4 is a view partly in section of a. further modification, and

Figure 5 is a view partly in longitudinal section showing one form ofthe invention as applied to a three layer wire rope.

Referring to Figures 1 and. 2 of the draw- Al indicates the end of alength offtwo layer wire rope of a conventional type, shown for purposesof illustration as comprising an exterior layer of wires 1 and aninterior layer of wires 2 layed about a core (not shown). As isusual inthis type of attachment an attachment sleeve 3 is swaged or compresseddown upon the rope A.

In accordance with the present invention, holding meansis provided forsecuring the inner layer or layers of strands or wires to cause suchlayer or layers of strands or wires to work in unison with the exteriorlayer.

For this purpose, as shown in Figure 1, a portion of the wires 1 is,removed to expose the interior layer of wires 2 at the end of the ropeA. A suitable metal sleeve 4 is then slipped upon the exposed portion ofthe interior layeryof wires 2 and swaged thereon. The attachment sleeve3 is then slipped overq and swaged down upon the sleeve 4 and the outerlayer of wires 1 to form substantially a unit therewith.

As a further method of securing a strong union between the parts, the'exteriors of both layers ofwires or strands are provided with shear lugs5 in any suitable manner as by serrating, grooving or threading thelayers of wires so that the material of the sleeves 3' and 4 Hows notonly into the grooves of the l. respective layers of wires but also intothe shear lugs 5 of the respective layers of wires, thus rmly andpositively gripping the layers of wires or strands.

The construction shown in Figure 2 is similar to that already describedin connection with Figure 1, differing therefrom only in that theexterior of the inner sleeve 4 is also provided with shear lugs 5 sothat both ARCHIBALD J.' MORGAN, OF TRENTON, NEW JERSEY,

NEW' JERSEY, A.

sleeves are firmly and positively locked togather.

In the modification shown in Figure 3 the holding means and attachmentsleeve are combined, the single sleeve 6 being so shaped as to closedown on swaging upon both the exterior and interior layers of wires 1,2, shear lugs 5 on the exterior of the wires being utilized as anadditional lock between the parts.

In the modification shown in Figure 4, the holding means for preventinglongitudinal or helical sliding of the layers of wires is secured byseparating the layers of wires for a portion of the rope to be securedwithin the attachment, coiling a suitable wire 7 about the inner layerand then relaying the outer layer 1 upon the inner layer 2. Theattachment sleeve 8 is then slipped upon the rope and swaged thereonsufliciently to cause the coiled wire 7 to indent the exterior of thewires 2 and the interior of the wires 1, thus effectively preventingrelative movement between the two layers of wires. The eXter-,

ior wires 1 are provided with shear lugs 5 formed by threading as in theother constructions shown, but may be formed by a vwire coiled about therope between the rope and sleeve if desired.

Figure 5 shows one form of the invention as applied to a three layerwire rope. This follows closely the form shown in Figures 1 and 2 inthat a sleeve is provided for each of the layers of the rope. The rope Acomprises layers of wires or strands 10, 11 and 12, upon which arerespectively swaged sleeves 13, 14 and 15, the sleeve 14 also beingswaged upon the sleeve 13, and the attach- 'ment sleeve 15 upon thesleeve 14. `The exshown by way of illustration as many modifications maybe made therein within the invention as defined by the claims. It willbe understood, also, that the term shear lugs herein is intended tocover one or more shear lugs, as in some cases only a single shear lugmay be used.

What is claimed is:

1. The method of securing attachments to wire ropes comprising twolayers of strands or wires laid about a core which consists in baringthe inner layer of strands or wires for a portion of the attachment,applying a sleeve to the bared portion of said layer, compressing thesleeve to cause the material thereof to flow in to the grooves of saidrope layer, enclosing the rope and said sleeve in an attachment sleeve,and compressing the attachment sleeve down upon the rope and said firstmentioned sleeve to cause the material thereof to flow into the groovesof the rope and force the layers of wires or strands to work in' unisonin sustaining strain on the attachment.

2. The method of securing attachments to wire ropes comprising twolayers of strands or wires laid about a core which consists in baringthe inner layer of strands or wires for a portion of the attachment,forming shear lugs on the bared portion of said layer, applying a sleeveto the bared portion of said layer, compressing the sleeve to cause thematerial thereof to flow in to the shear lugs and grooves of said ropelayer, forming shear lugs on the exterior layer of strands or wires,enclosing the rope and said sleeve in an attachment sleeve, andcompressing the attachment sleeve down upon the rope and said firstmentioned sleeve to cause the material thereof to flow into the groovesof the rope and force the layers of wires or strands to work in unisonin sustaining strain on the attachment.

3. The method ofsecuring attachments to wire ropes comprising two layersof strands or wires laid about a core which consists in baring the innerlayer of strands or wires for a portion of the attachment, forming shearlugs on the bared portion of said layer, applying a sleeve to the baredportion of said layer, compressing the sleeve to cause the materialthereof to flow in to the shear lugs and grooves of said rope layer,forming shear lugs on the exterior layer of strands or wires and saidsleeve, enclosing the rope and said sleeve in an attachment sleeve, andcompressing the attachment sleeve down upon the rope and said firstmentioned sleeve to cause the material thereof to flow into the ropegrooves and force the layers of wires or strands to work in unison insustaining strain on the attachment.

4. The method of securing attachments to multi-layer wire ropes whichcomprises baring each layer of strands or wires for a portion of theattachment, forming shear lugs on each layer of strands or wires,applying a sleeve to the bared portions of each layer of strands orwires and compressing the first sleeve down upon its layer of strands orwires and each succeeding sleeve upon its layer of strands or wires andthe sleeve of the preceding layer of strands or wires, and finallyapplying and compressing an attachment sleeve down upon the exteriorlayer of strands or wires and the sleeve of the preceding layer to causethe'material thereof to flow into the rope grooves and force the sleeveenclosn -an inner layer of strands ,1.

"'wvires and hel A,thereon vbyv a portvonof` metal'll-ing 'shear lugsomedgon said layer of'strands or wires and the grooves thereof,

and-'an attachment sleeve enclosing the rope und said sleeveand-compressed to secure .the sleeve thereon by a. portionfof its metalfilling the rope grooves and shear lugs formed 4 in the rope and saidrst mentioned-sleeve, sald layers of strands o1' wlres Worklng 1n unisonin sustaining the strain on the attach- Y ment.

I RICHARD'DUANE GREEN.

ARCHIBALD J. MORGAN.

